Explain ocean-thermal energy and how can it be harnessed. Mention any two limitations
Explain ocean-thermal energy and how can it be harnessed. Mention any two limitations in obtaining the energy from the oceans
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The difference in temperature between warm surface water heated by the sun and colder water found at ocean depth is a source of energy called ocean thermal energy. The difference in temperature is exploited in OTE conversion plants. The warm surface water is used to boil a volatile liquid like ammonia. The vapours are used to run the turbine of a generator.
Limitations :
(i) Efficient commercial exploitation is difficult.
(ii) Expensive set up.
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